Thomas blanchard



THOMAS BLANCHARD, or New YORK, N. Y.

MACHINE FOR BORING HOLES AND CUTTING LANYARDSCOBQES IN DEAD-EYES.

Specification of Letters Patent No. 7, dated August 10, 1836.

To all who/m, t may concern Be it known that I, THOMAS BLANCHARD,

late of Springfield, in the county of Hampden and State of Massachusetts, but now of the city, county, and State of New York, have made and invented and applied rto use certain new and useful improvements in the method of boring holes and cutting the lanyard-scores in what are technically called t deadeyes7 for use on board shipping, which said improvements, with the machinery by which the same are effected and the method of constructing and using the same, are fully described and set forth in the following specification and in the drawing hereunto annexed and making a part of this speciication, wherein the principal ligure represents an orthographical perspective of the said machine.

A, A, A, A, are four legs.

B, B, are two longitudinal, and C, C, are two cross pieces shown as of wood, but may be made of iron.

D, is a frame, or bed of iron bolted down to the frame, and supporting the two diver-ging standards, E, E, E, E, having slots.

a, a, a, a, in the arms, and having the arbor b, and pulley F, mounted on two hanging brackets C, C. The end of the arbor being fitted to receive the spoon bit al, made with a shifting lip, or cutter in the upper, or

head part of each of the diverging standards E, E, is a slot to secure the lower one of the guide bars c, e, the upper one being made to slide on the lower one by slots with bolts to secure it at any required distance.

'At the other` end of the frame are-four short posts Gr, G, G, G, rising out of the main frame, and supporting the two metal railway bars H, 'H, on which the roller f, with a wheel at each end traverses the roller f, supporting the carriage g, to which is attached the lower I, one end of which is elongated to receive the counterbalance weight z'. The other end terminates in a fork J,hav ing counter screws to support, and maintain in place the swing frame K, at one side of which is the spur piece h, fitted with points to hold the dead eyes, and this spur is secured at any required distance by means of a set screw going through the swing Jframe K. At the opposite side of the swing frame K, and central with' the spur stock 7L, is fitted a screw Z, having a center point at one end, and a crank handle m, at the other end, and resting in the nut n. Above this,

and on the upper part of therswing frame vis fitted the bracket o, on which the movable bracket. p, vand form block 71, is mounted which is made with three mortises 'corrsponding with the "three lanyard holes in' the dead veye to be bored, on the upper part of the 'form block r, are the three set screws S, S, S', which by going through into the mortises regulate the vertical position of the holes to be bored. The lower end of the mortises in the forni block are cut on each side in a curve similar to the curve required for the lanyard scoring in the dead eye.

'Attached by a bolt to the underside of the fork J, 1s the lever t, which works at one end in a universal socket joint shown dotted behind the standard, the opposite end being elongated to form a lever for the workman to guide the work. Attached to bottom of the fork J, is the steady bar w, tted'in a rightrline with the center of the fork,"and made to work in the slot-s between the'lower guide plates V, V, V, V, which are made with slots to adjust them at any required dis-f: tance. When 1t is desired tobore dead eyes,

the machine is lirst adjusted by measure to the proper distances between all parts, and rapid rotary mot-ion being given to the bit ci, by a belt on the pulley F, from any VK'first mover. The workman puts a block of wood, previously prepared for the purpose, be-

tween the spur block h, and the center screw C, and securing it there by turning the ceni Y terv point into it, he then grasps the end of the lever t, and advances the whole ofthe work on the railway toward the boring bit- CZ, he causes the upper one of the guide bars e, to enter whichever mortise in the form block r, he pleases, and the lower steady bar w, to pass between the corresponding guide plates V, V, thus steadying the whole eectually and continuing the motion until the bit bores a straight hole in the dead eye, and the lower guide piece is within the form block r. He then withdraws, and raises the fork, and machineryattached to it, bring.

ing the rounded end of the lowergude bar e, in contact with that part in the mortise of the form block, which is rounded, andl moving it upward, and downward. The compound curve formed by moving the form block in contact with the lower guidel bar e, causes the'bit to cut the lanyard'score, f,

to one hole, on that sideof the dead eye, the

around carrying the guide block, and dead eye with it, and the opposite side of the dead eye is presented by the Workman to undergo a similar operation With the bit. When the size of the dead eye admits it, three bits can be used at once, and conse quently all three holes bored at one opera- 1 tion by putting in two additional angers,

or bits, secured by brackets bolted in the slots a, a, a, a, and by adjusting them Vto proper distances, the guide bar e, only enters thercenter mortise in the form block, and the operation in other respects is performed as before described.

And I, the said THOMAS BLANCHARD, do hereby declare that Ido not claim as my invention any ofthe separate parts of the above described machine, but I do claim as my invention- The combination of the several parts of said machine as herein described, and used by me, and applied to the purpose of boring the holes, and cutting'the lanyard scores in what are technically termed dead eyes with one, or more boring bits, substantially in. the manner above described, and set forth.

Y 'rHos BLANCHARD.

TWitnesses S. P. STAPLES, C. S. SHERMAN. 

